JPH0625584Y2 - Vehicle back door lock device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to a back door lock device for a back door that opens and closes a rear opening in a vehicle such as a one-box car.

(Prior Art) In a vehicle such as a one-box car, a back opening 2 is provided at a rear portion of a vehicle body 1 as shown in FIG.
It is configured so that luggage can be loaded and unloaded and loaded and unloaded.

By the way, a back door 3 that opens and closes the back opening 2.
There is a lateral opening type, and there is a back door 3 in which an upper opening type hatch 4 made of glass is provided in a part of the back door 3. As described above, in the vehicle provided with the side-opening type back door 3 and the upper-opening type hatch 4, when the back door 3 is opened with the hatch 4 left open, that is, when both are opened at the same time, the hatch 4 is It largely projects outward from the side wall of 1. Therefore, the hatch 4 may come into contact with another vehicle when loading or unloading luggage on the road or the like. This may cause damage to the hatch 4 or damage to other vehicles.

(Problems to be Solved by the Invention) As described above, in a vehicle in which the back door 3 and the hatch 4 are used together, there is a risk of forgetting to close the hatch 4, and there is a need for improvement due to safety issues. There is.

This invention was made in view of the above circumstances, and its purpose is to prevent the back door from opening when the hatch is open, and to prevent the hatch from opening when the back door is open. An object of the present invention is to provide a back door lock device for a vehicle that can eliminate the above-mentioned danger.

[Structure of the Invention] (Means and Actions for Solving the Problems) In order to solve the above problems, the present invention relates to a first rotation lever having a cam hole in a back door and an engagement with the cam hole. And a third rotation lever pivotally supported with respect to the second rotation lever and engaged with and disengaged from the second rotation lever, and the third rotation. A link assembly is provided that comprises a lever and a fourth pivoting lever that engages and disengages.

Further, the first rotation lever and the door lock mechanism of the back door are interlocked with each other by the first rod so that the door lock mechanism can be locked / unlocked, and the second rotation lever and the single door lock mechanism are combined with each other. The key cylinder is interlocked with a second rod to lock and unlock the door lock mechanism and release the hatch lock mechanism, and the third rotation lever and the hatch lock mechanism are connected by the third rod. The hatch lock mechanism can be released in conjunction therewith, and the fourth rotating lever is further interlocked with the open / close sensor of the back door by the fourth rod.

Then, when the back door is in the open state by the open / close sensor, the fourth rotation lever is rotationally biased via the fourth rod to restrain the rotation of the third rotation lever, and the third rod is closed. The hatch lock mechanism is held in the locked state via the lever to prevent the hatch from opening, and conversely, when the hatch lock mechanism is in the unlocked state, the third rotation lever is rotated and biased via the third rod. Position, the first and second turning levers are restrained to disable the door lock mechanism, and the key cylinder cannot be set to the unlock position.
It is characterized in that the back door does not open when the hatch is in the open state, and the hatch does not open when the back door is in the open state.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 schematically shows the entire back door lock device. 5 is a door lock mechanism, 6 is a door handle, 7 is a hatch lock mechanism, 8 is a link assembly, 9 is a key cylinder, 10 is an opening / closing sensor, Reference numeral 11 is an automatic door lock mechanism.

The door lock mechanism 5 will be described. It is basically the same as the conventional back door lock mechanism, and is composed of a striker 12 fixed to the vehicle body 1 and a latch assembly 13. The latch assembly 13 is attached to the back door 3, and as shown in FIGS. 2 and 3, a latch 15 is pivotally supported by a pivot pin 16 with respect to a latch base 14. A spring 17 biases the striker 12 in a direction to engage the striker 12. Latch 15 on the latch base 14
An open lever 18 interlocking with is pivotally supported, and a lock lever 19 is pivotally supported. The open lever 18 is interlocked with the door handle 6 by a fifth rod 20, and by manually operating the door handle 6, the fifth rod 20 moves in the arrow opening direction to open the latch 15 and striker. Latch 1 for 12
5 can be engaged and disengaged. Further, the lock lever 19 is rotatable about a pivot pin 21,
A rod connecting portion 19a is provided in part. And
The lock lever 19 has the latch 1 at the solid line position in the figure.
5 is in a releasable state (unlocked) and the latch 15 is in a non-releasable state (locked) at the position of the broken line so that the door lock mechanism 5 can be locked / unlocked.

Next, the hatch lock mechanism 7 will be described.
It is constructed as shown in FIGS. 4 to 6. Reference numeral 22 denotes a cover, which is fixed to the back door 3. The cover 22 is provided with a notch 23 that opens toward the hatch 4, and the notch 23 is provided with a latch 24 pivotally supported by the pivot 22 with respect to the cover 22. A stop lever 25 is pivotally supported by a pivot pin 26 on the rear portion of the latch 24. An engaging recess 28 for engaging and disengaging a striker 27 provided on the hatch 4 is formed at one end of the latch 24, and an engaging step 29 is formed at the other end. An engaging recess 30 is formed at the tip of the stopper lever 25, and an engaging step 31 that can be engaged with and disengaged from the engaging step 29 of the latch 24 is formed in the middle. Further, the latch 24 is provided with a biasing spring 32, which biases the latch 24 against the striker 27.

Further, a pivot support pin 33 protruding in a direction perpendicular to the pivot support pins 24a and 26 of the latch 24 and the stop lever 25 is provided at a lower portion of the cover 22, and the pivot support pin 33 is provided.
An intermediate portion of the turning lever 34 is pivotally supported by the. Then, the rotating lever 34 is biased in the direction of the arrow by the biasing spring 35, and the convex portion 36 at one end of the rotating lever 34.
Is locked in the locking recess 30 of the stop lever 25. That is, the rotation lever 34 causes the stop lever 2
5 can be pivotally displaced about the pivot pin 26, and the latch 2
4 can be released and locked (locked). Further, the rod connecting portion 3 is attached to the other end of the rotating lever 34.
4a is provided.

Next, the link assembly 8 will be described. The link assembly 8 is configured as shown in FIGS. 7 to 10.
That is, 37 is a link base, which is fixed to the back door 3. This link base 3
A pivot pin 38 is projectingly provided on the shaft 7, and a first pivot lever 39 is pivotally pivoted on the pivot pin 38. The first rotating lever 39 has a cam hole 40 in the center and is formed in a modified donut shape. Furthermore, the first
A projecting part 41 projecting in the radial direction is provided on a side part of the outer peripheral part of the rotating lever 39 of the first lever 42. One end part of a fifth rod 42 is connected to the projecting part 41, and the other end part thereof is the automatic door. It is connected to the lock device 11. Further, a rod connecting portion 43 is provided on an upper portion of an outer peripheral portion of the first rotating lever 39, one end portion of a first rod 44 is connected to the rod connecting portion 43, and the other end portion thereof is the door. It is connected to a rod connecting portion 19a provided on the lock lever 19 of the lock mechanism 5. That is, the door lock mechanism 5 can be locked / unlocked by the rotational deviation of the first rotating lever 39. Further, an engaging step portion 45 is provided in the lower portion of the outer peripheral portion of the first rotating lever 39 by a cutout.

A second turning lever 47 is provided near the lower side of the first turning lever 39, and a middle portion of the second turning lever 47 is pivotally supported by a pivot pin 46 projecting from the link base 37. . A roller 48 as an engaging portion is attached to one end of the second turning lever 47, which is the first turning lever 3 described above.
9 is engaged with the cam hole 40. Second rotation lever 47
A rod connecting portion 49 is provided at the other end of the rod connecting portion 49, a second rod 50 is connected to the rod connecting portion 49, and the other end portion is connected to the key cylinder 9. That is,
The key cylinder 9 is configured to rotate the second rotation lever 47, and the door lock mechanism 5 can be locked / unlocked via the first rotation lever 39 and the first rod 44.

Further, on the upper side of the second rotation lever 47, a third rotation lever 51 is provided, one end of which is pivotally supported on the pivot support pin 46 so as to be rotatable. The third rotation lever 51 projects outward from the first rotation lever 39,
A first abutting portion 52 facing the engaging step portion 45 of the first turning lever 39 and a second abutting portion 53 facing a fourth turning lever 57, which will be described later, are provided at the tip portion thereof. Has been. Further, a third contact portion 54 is provided on one side portion of the third rotation lever 51, which faces an engagement step portion 47 a provided at a middle portion of the third rotation lever 47. ing. Further, the rod connecting portion 5 is provided at the tip of the third turning lever 51.
5 is provided, and one end of the third rod 56 is connected to the rod connecting portion 55. This third rod 56
The other end of the rod is a rod connecting portion 34 of the hatch lock mechanism 7.
The hatch lock mechanism 7 is configured to be disengaged by being coupled to a and being pivotally displaced by the third pivot lever 51.

Further, the link base 37 is provided with a fourth turning lever 57 near the third turning lever 51. The fourth rotation lever 57 has a substantially L shape, and an intermediate portion thereof is rotatably supported by a pivot pin 57a.
A stopper 58 facing the second contact portion 53 of the third turning lever 47 is provided at one end of the fourth turning lever 57, and a rod connecting portion 59 is provided at the other end. It is provided. The rod connecting portion 59 has a fourth
One end of the rod 60 is connected, and the other end is connected to the open / close sensor 61.

As shown in FIG. 11, the open / close sensor 61 includes a base 63 attached to the back door 3 facing a stopper member 62 provided at the opening edge of the rear opening 2 of the vehicle body 1, and a base 63 attached to the base 63. The sensor lever 65 is pivotally supported by a pivot pin 64. The tip end of the sensor lever 65 is biased toward the stopper member 62 by a biasing spring 66, and the fourth rod 60 is connected to the base end of the sensor lever 65. Then, when the back door 3 is closed, the sensor lever 65 contacts the stopper member 62, pivotally deviates against the biasing spring 66, pulls the fourth rod 60, and the back door 3 opens. When the sensor rod 65 is in the open state, the urging force of the urging spring 66 causes the sensor lever 65 to rotate to cause the fourth rod 60 to project. That is, the opening / closing of the back door 3 can be detected by the forward / backward movement of the fourth rod 60,
The fourth rotating lever 57 is designed to be rotationally displaced.

As shown in FIG. 12, the key cylinder 9 is provided on the outer wall of the back door 3 and comprises an unlocked position 9a and a locked position 9b of the back door 3 and an unlocked position 9c of the hatch 4 for inserting a key. The link assembly 8 can be operated by rotating the link assembly 8.

Next, the operation of the back door lock device configured as described above will be described. First of all, this device is hatch 4
Is configured so that the back door 3 does not open when is open, and the hatch 4 does not open when the back door 3 is open. That is, when the hatch 4 is open, the striker 27 provided on the hatch 4 is released from the engaging recess 28 provided on the latch 24 of the hatch lock mechanism 7. Therefore, the latch 24 is rotated clockwise about the pivot pin 24a, and the engaging step 25a of the stop lever 25 is in contact with the engaging step 24a.
For this reason, the stop lever 25 is pivotally displaced counterclockwise as shown by the broken line in FIG.
The rotation lever 34, which is locked in the locking recess 30 of 5, is pivotally displaced clockwise about the pivot pin 33. The third rod 56 projects in the arrow opening direction (see FIG. 1) by the rotation of the rotation lever 34. Third rod 56
The third rotation lever 51 of the link assembly 8 is pivotally displaced clockwise about the pivot pin 46 by the protrusion in the arrow opening direction, and as shown in FIG. 52 is the engagement step 45 of the first turning lever 39. Therefore, the first turning lever 51
The rotation lever 39 is made non-rotatable, and at the same time, the rotation of the second rotation lever 47 engaged with the cam hole 40 of the first rotation lever 39 via the roller 48 is also made impossible. In this state, that is, when the hatch 4 is open, even if the key is inserted into the key cylinder 9 and the key is rotated to the unlock position 10a of the back door 3, the second rotation lever 47 that cannot rotate is connected to the second rotation lever 47. Since it is connected to the key cylinder 10 by the second rod 50, it is impossible to rotate the key cylinder 9 to the unlock position 9a. Eventually, the door lock mechanism 5 is unlocked and the back door 3 is unlocked. Can't open.

Further, when the back door 3 is open or in a half-open state, the tip of the sensor lever 65 of the open / close sensor 61 is separated from the stopper member 62. Therefore,
The sensor lever 65 is biased by the biasing spring 66 in the clockwise direction so that the fourth rod 60 is projected.
Therefore, the fourth rotation lever 51 connected to the fourth rod 60 rotates counterclockwise about the pivot pin 58, and the stopper 58a moves to the second contact lever of the third rotation lever 51. It faces the contact portion 53. Therefore, the hatch lock mechanism 7
The third rotating lever 51 connected to the rotating lever 34 of FIG. 3 through the third rod 56 becomes non-rotatable, and as shown in FIG. Contact 5
The second rotation lever 47, which is in contact with 4, is also not rotatable. Therefore, it is impossible to rotate the key cylinder 9 to the unlock position 9c of the hatch 4, and eventually it is impossible to unlock the hatch 4 by operating the key cylinder 9 when the back door 3 is open. Becomes

As described above, it is impossible to open the back door 3 when the hatch 4 is open, and it is impossible to open the hatch 4 when the back door 3 is open or in the half-opened state. Can be improved.

Further, the automatic door lock device 11 normally causes the fifth
Of the link assembly 8 by moving the rod 42 of the
Since the turning lever 39 of the door can be turned, the door lock mechanism 5
Can be locked / unlocked, but when the hatch 4 is open, as described above, the third rod 56 projects in the arrow opening direction to cause the third rotation lever 51 to rotate and shift in the clockwise direction. The first contact portion 52 serves as the engagement step portion 45 of the first rotation lever 39. Therefore, the third rotation lever 51 makes the first rotation lever 39 non-rotatable, and at the same time, the second rotation lever 39 is engaged with the cam hole 40 of the first rotation lever 39 via the roller 48. The rotation of the lever 47 is also disabled. Therefore, when the hatch 4 is open, it is impossible to unlock the door lock mechanism 5 even if the automatic door lock mechanism 11 is operated.

In addition, in the above-described embodiment, the back door lock device that also uses the automatic door lock mechanism 11 has been described, but it is sufficient that the automatic door lock mechanism 11 is not provided, that is, the lock / unlock can be performed only by the key cylinder 9.

[Effect of device]

As described above, according to this invention, the back door cannot be opened when the hatch is open, and conversely, the hatch cannot be opened when the back door is open. Therefore, the hatch will not come into contact with other vehicles and the hatch will not be damaged or damage other vehicles,
This has the effect of improving safety.

[Brief description of drawings]

1 to 12 show an embodiment of the present invention. FIG. 1 is a schematic configuration diagram of a back door lock device, FIG. 2 is a side view of a door lock mechanism, and FIG. Fig. 4 is an exploded perspective view of the hatch lock mechanism, Fig. 5 is the same side view, Fig. 6 is the same bottom view, Fig. 7 is a plan view of the link assembly, Fig. 8 the same side view, and Fig. 9. And FIG. 10 is the same operation explanatory view, FIG. 11 is a perspective view of the open / close sensor, FIG. 12 is a front view of the key cylinder, and FIG.
The figure is a perspective view of a general one-box car. 1 ... Vehicle body, 2 ... Rear opening, 3 ... Back door, 4 ... Hatch, 5 ... Door lock mechanism, 6 ... Door handle, 7 ... Hatch lock mechanism, 8 ... Link assembly, 9 ... Key cylinder, 10 ... Open / close sensor , 39 ... First rotation lever, 4
0 ... Cam hole (engagement portion), 47 ... Second turning lever, 51
... third rotation lever, 57 ... fourth rotation lever, 44,
50, 56, 60 ... Rod.

Claims (1)

[Scope of utility model registration request] 1. A rear opening of a vehicle body is provided with a laterally opening type back door, and a part of the back door is provided with an upward opening type hatch, and the back door is locked to the vehicle body when the hatch is closed. A door lock mechanism for locking a back door when the hatch is closed, a door handle that interlocks with the door lock mechanism, and a key cylinder. A first rotation lever having a cam hole, a second rotation lever having an engagement portion that engages with the cam hole, and a second rotation lever pivotally supported with respect to the second rotation lever. A link assembly including a third rotating lever that is disengaged from the moving lever and a fourth rotating lever that is disengaged from the third rotating lever is provided, and the first rotating lever and the door lock are provided. A single key cylinder capable of locking and unlocking the door lock mechanism by interlocking the mechanism with a first rod and locking and unlocking the door lock mechanism and releasing the hatch lock mechanism is a second key cylinder. Interlock with the second turning lever by the rod of
Further, the third rotation lever and the hatch lock mechanism are interlocked by a third rod so that the hatch lock mechanism can be released. Further, the fourth rotation lever is connected by the fourth rod to the open / close sensor of the back door. When the back door is in the open state by the opening / closing sensor, the fourth rotation lever is rotatably biased via the fourth rod to restrain the rotation of the third rotation lever. The hatch lock mechanism is held in the locked state via the rod of the second lock lever, and when the hatch lock mechanism is in the released state, the third rotation lever is pivotally displaced via the third rod, and the first and second A back door lock device for a vehicle, wherein a turning lever is restrained so that a door lock mechanism cannot be unlocked and a key cylinder cannot be set to an unlock position.